Part of our trip took in The Burren in County Clare which is a remarkable piece of landscape with huge exposed 'pavements' of limestone. There is a great variety of plantlife growing in-between the cracks and fissures in the stone. They seem to respond well to the warm moist air that flows over them and the light and heat reflected from the rock.
As I was walking across I spotted this self-sown sea spinach, a relative of chard, growing healthily away. That's nature for you, I couldn't get the stuff to take root this year, but there it was thriving away without anyone to tend to it.